Matthias, > This gdal command mosaics all SRTM-Tiles into on bi geotiff. This is > what I use for SRTM-Display. Performance is good (equla to using tiles), > and you don't need to care about managing all the tiles on your server: > > > gdal_merge -of GTiff -co "TILED=YES" -co "COMPRESS=LZW" -co > "BIGTIFF=YES" -ot Int16 -n -32768 -v -o srtm41.tif tiff/*.tif > > > Make sure, you have all your srtm tiles downloaded and stored in ./tiff.
thanks for the tip, this worked (after initiall converting the original .hgt.zip files into GeoTIFF). I got a large GeoTIFF file, which is a BigTIFF file, thus I can't look at it using conventional Linux tools (like eog or gimp) as they all complain about not having BigTIFF support :) > The command created a 16-bit image, compresses it, applies tiling and > all the good stuff. > > > You also want to build overviews for display speed, so issue this > command subsequently: > > gdaladdo -r cubic srtm41.tif 4 8 16 32 64 128 256 512 > > This will create the image pyramids srtm41.tif . this does not seem to work for me - simply doesn't generate any files: $ ls srtm41.tif $ gdaladdo -r cubic srtm41.tif 4 8 16 32 64 128 256 512 0...10...20...30...40...50...60...70...80...90...100 - done. $ ls srtm41.tif I'm using gdal 1.7.3: $ gdaladdo --version GDAL 1.7.3, released 2010/11/10 would I need a newer version? Akos ------------------------------------------------------------------------------ RSA(R) Conference 2012 Save $700 by Nov 18 Register now http://p.sf.net/sfu/rsa-sfdev2dev1 _______________________________________________ Geoserver-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geoserver-users
